[Marty just smiled at the complaint, though he looked even more tired when he did. A witty retort was just a little beyond him right now.]

Yeah... it might melt film. We don't know what it's made out of, it could be nanobots or prehensile robotic-- [He breaks off, shaking his head. Just way too tired to even finish the damn technobabble.]

Just be careful with it.